>>105425841She has no gem weapon. Maybe Era 2 gems simply don't have them, normally.
But let's examine what their fusion would be like.
Amethyst is laid-back, with a tendency to brood, boisterous, physical, playful and insecure. Physically she is strong, a natural fighter and an exceptional shapeshifter.
Peridot is officious, emotionally well-adjusted, also boisterous, cerebral, a bit sardonic and also insecure, but less so than before.
Physically she is very weak and she c an't shapeshift, but she can manipulate metals in a way that does not seem to be electromagnetism-based. She is an excellent engineer.
So their fusion would be playful, mischievous, strong, smart, but given to both boasting and self-deprecation. I think she'd be emotionally well-adjusted since they do get along. Still salty Periven was dropped. Damn you, Zuke.